Ryan Carr had made a racist comment in July 2013, which read, "Am I racist if I feel uncomfortable about a guy with a turban on my plane because this isn't okay with me."
A year later, Ashishpal Singh, a 22-year-old biological sciences student at Penn State University, gave a befitting reply, saying, "Ugh, I know what you mean, I get really uncomfortable whenever I see a white man walk into a movie theatre or elementary school."
Carr immediately responded saying, "You're actually funny, if anyone's seen my twitter it's never to be taken seriously, but I laughed at your tweet."
The conversation has since gone viral with several people taking to micro-blogging site Twitter to term Carr a racist.
Earlier, American rapper Joe Budden had also received a similar reaction after he had posted a Sikh man's photo along with a racist comment on a website in March this year. Budden, too, received a befitting reply from a Los Angeles-based Sikh youth Jaskaran Dhanoa. After drawing flak from the virtual world, Budden removed the picture from his account and tendered an apology.